Elektron 675 Magnesium Wrought Alloy，AMS 2154 Class AA,E FOUR

Elektron 675 Magnesium Wrought Alloy (AMS 2154 Class AA)** **Product Overview** Elektron 675 is a high-strength, heat-treatable magnesium wrought alloy, renowned for its exceptional combination of specific strength, ductility, and creep resistance at elevated temperatures. Developed for the most demanding aerospace and racing applications, it represents a significant advancement over earlier magnesium alloys. Its designation to **AMS 2154 Class AA** ensures it meets the stringent chemical, mechanical, and quality requirements for premium aerospace components. This alloy is typically supplied in forms such as forgings, extrusions, and plates, where weight reduction is critical without compromising structural integrity. --- #### **1. Chemical Composition** The composition of Elektron 675 is precisely controlled to achieve its superior properties. Key alloying elements include Rare Earths (RE), Yttrium (Y), and Zirconium (Zr). | Element | Composition (% by Weight) | | :--- | :--- | | **Yttrium (Y)** | 2.0 - 2.8 % | | **Rare Earths (RE)*** | 1.75 - 2.5 % | | **Zirconium (Zr)** | 0.4 - 1.0 % | | **Zinc (Zn)** | ≤ 0.10 % | | **Manganese (Mn)** | ≤ 0.15 % | | **Copper (Cu)** | ≤ 0.05 % | | **Iron (Fe)** | ≤ 0.05 % | | **Nickel (Ni)** | ≤ 0.005 % | | **Silicon (Si)** | ≤ 0.05 % | | **Other Impurities** | ≤ 0.30 % (each) | | **Magnesium (Mg)** | Balance | *Note:* The "Rare Earths" are typically a blend of Neodymium (Nd) and Gadolinium (Gd), which are crucial for forming strengthening precipitates. --- #### **2. Physical & Mechanical Properties** Elektron 675 exhibits a favorable property profile, especially after solution heat treatment and aging (T5 or T6 temper). **Physical Properties:** * **Density:** ~1.82 g/cm³ (0.065 lb/in³) - One of the lightest structural metals available. * **Melting Range:** ~ 550 - 640 °C (1022 - 1184 °F) **Typical Mechanical Properties (at Room Temperature, T6 Condition):** * **Ultimate Tensile Strength (UTS):** 345 - 365 MPa (50 - 53 ksi) * **Tensile Yield Strength (TYS):** 255 - 275 MPa (37 - 40 ksi) * **Compressive Yield Strength (CYS):** 240 - 260 MPa (35 - 38 ksi) * **Elongation:** 4 - 7% * **Shear Strength:** ~ 165 MPa (24 ksi) * **Hardness:** 75 - 85 HBW **Elevated Temperature Performance:** A key advantage of Elektron 675 is its retention of strength at temperatures up to approximately 250°C (482°F), outperforming most other magnesium alloys. It offers excellent creep resistance, making it suitable for components exposed to sustained thermal and mechanical loads. --- #### **3. International Standards & Specifications** Elektron 675 is covered by several international and industry-specific standards, ensuring consistent quality and performance. * **Aerospace Material Specification (AMS):** **AMS 2154** (This is the primary governing specification for forgings, defining Class AA for the highest quality) * **ASTM International:** **ASTM B107 / B107M** (Standard Specification for Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes, and Wire) * **Aircraft Manufacturer Standards:** Often approved under material specifications from major OEMs like Airbus and Boeing. * **Proprietary Designation:** **Elektron 675** is a registered trademark of Luxfer MEL Technologies, a leading producer. --- #### **4. Product Applications** Due to its high performance and cost, Elektron 675 is primarily used in critical, weight-sensitive applications, particularly in aerospace and high-performance engineering. * **Aerospace:** * **Engine Components:** Gearbox housings, transmission casings, and accessory drive housings in gas turbine engines. * **Airframe Structures:** Landing gear components, wheels, helicopter rotor hubs, and missile body sections. * **Interior & Systems:** Seat frames and other structural airframe parts. * **Motorports:** * **Formula 1 & Motorsports:** Wheel rims, gearbox casings, suspension uprights, and other chassis components where minimal unsprung mass is critical. * **Defense:** * Lightweight housings for portable electronics, guidance systems, and UAV (Unmanned Aerial Vehicle) components. --- **Summary** **Elektron 675 (AMS 2154 Class AA)** is a premium magnesium wrought alloy that delivers an outstanding strength-to-weight ratio and excellent high-temperature capabilities. Its well-defined chemistry and adherence to rigorous international standards like AMS 2154 make it a trusted material for engineers designing next-generation aerospace and high-performance vehicles where every gram saved translates directly into enhanced efficiency, performance, and payload capacity.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3388 gallon liquid totes Special package is available on request.